EP 3985288 B1 20240717 - FLOW AND PRESSURE CONTROL DEVICE
Title (en)
FLOW AND PRESSURE CONTROL DEVICE
Title (de)
DURCHFLUSS- UND DRUCKSTEUERUNGSVORRICHTUNG
Title (fr)
DISPOSITIF DE RÉGULATION DE PRESSION ET DE DÉBIT
Publication
Application
Priority
- CN 201910501850 A 20190611
- CN 2020092394 W 20200526
Abstract (en)
[origin: EP3985288A1] A flow and pressure control device, pertaining to the field of flow control or hydraulic transmission, and solving the problem in which the inscribed circle radius of a passage section of a conventional flow control valve is small and therefore not conducive to flow control and pressure transmission of an inhomogeneous fluid or a viscous fluid. The flow and pressure control device comprises: a valve body, a flow limiting core and an adjustment device The valve body comprises: an outlet pipe, a transition cavity and an inlet pipe having a circular or elliptical cross section. The flow limiting core can be completely inserted into the inlet pipe, and blocks a fluid passage of the inlet pipe. An inclined and inwardly recessed surface is provided at an end portion of the flow limiting core. The adjustment device is used to adjust the depth by which the flow limiting core is inserted into the inlet pipe. An operating section of the flow and pressure control device is approximately circular or approximately elliptical or is a combination of a partially circular shape and a partially elliptical shape. In the case where the invention has the same pass-through section proportions as the prior art, the diameter of passing particles are at least 2-10 times, thereby reducing the interference of impurities and fouling on operation the device, reducing energy consumption, and reducing wear and tear of the device.
IPC 8 full level
F16K 1/32 (2006.01); F16K 1/12 (2006.01); F16K 1/36 (2006.01); F16K 3/24 (2006.01); F16K 5/06 (2006.01); F16K 5/08 (2006.01)
CPC (source: CN EP US)
F16K 1/32 (2013.01 - CN); F16K 1/36 (2013.01 - CN US); F16K 3/24 (2013.01 - EP); F16K 5/0605 (2013.01 - CN US); F16K 5/08 (2013.01 - CN); G06F 30/17 (2020.01 - CN); G06F 2113/14 (2020.01 - CN)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3985288 A1 20220420; EP 3985288 A4 20221130; EP 3985288 B1 20240717; CN 110206899 A 20190906; CN 110206899 B 20201120; US 2022221065 A1 20220714; WO 2020248814 A1 20201217
DOCDB simple family (application)
EP 20822203 A 20200526; CN 201910501850 A 20190611; CN 2020092394 W 20200526; US 202017618238 A 20200526